Description
Lennox 27J29 Auto Limit Switch Overview
The Lennox 27J29 is an OEM auto-reset high-limit switch engineered to protect furnaces and heating systems from dangerous overheating conditions. Featuring a 190–220°F operating range and a 7″ insertion depth, this limit switch is a direct-replacement component designed to maintain safe, reliable furnace operation.
How It Works
The auto-reset limit switch continuously monitors supply-air or heat exchanger temperatures. When temperatures exceed the set point, the switch opens the circuit to shut down the burner or blower, preventing equipment damage and potential hazards. Once temperatures return to a safe level, the switch automatically resets — eliminating the need for manual intervention and minimizing system downtime.
Key Features
- Auto-reset operation for minimal downtime and hands-free recovery
- 190–220°F temperature range for precise high-limit protection
- 7″ insertion depth for accurate sensing within the heat exchanger or plenum
- OEM Lennox replacement part — ensures proper fit and performance
- Durable construction built to withstand the demands of residential and light commercial heating systems
Application
- Direct OEM replacement for compatible Lennox furnaces and heating systems
- Suitable for residential and light commercial HVAC applications
- Installs in the supply air plenum or heat exchanger housing
Specifications
- SKU: 27J29
- Brand: Lennox
- Type: Auto-Reset Limit Switch
- Temperature Range: 190–220°F
- Insert Length: 7″
Reviews
There are no reviews yet.